General Chemistry Ch. 11 TB

8/11/2019 General Chemistry Ch. 11 TB

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Chapter 11 - States of Matter: Liquids and Solids

1. Which of the following statements concerning liquids is incorrect?

A) The volume of a liquid changes very little with pressure.

B) Liquids are relatively incompressile.

!) Liquid molecules move slowly compared to solids.") #on$volatile liquids have low vapor pressures at room temperature.

%) The molecules of a liquid are in constant random motion.A#&' ! (T&' 1 "*' easy +%*' 11.1

,B-' !ompare a gas a liquid and a solid using a /inetic$molecular theory description.

T,(' phases 0 liquid %2' properties of liquids3&!' general chemistry

4. Which of the following statements concerning solids liquids and gases is5are correct?

1. The close contact of the particles in a solid prevents all possile motion

including virational motion.

4. Liquids and gases are oth considered fluids.

6. The postulate from /inetic$molecular theory that the particles in a gas are inconstant random motion is equally applicale to liquids e7cept the particles are

more tightly pac/ed in a gas.

A) 1 only

B) 4 only!) 6 only

") 1 and 4

%) 4 and 6

A#&' B (T&' 1 "*' easy +%*' 11.1

,B-' !ompare a gas a liquid and a solid using a /inetic$molecular theory description.T,(' phases 0 liquid

6. What is the name for the following phase change?

48s) 48g)

A) sulimation

B) free9ing!) vapori9ation

") condensation

%) melting

A#&' A (T&' 1 "*' easy +%*' 11.4,B-' "efine melting free9ing vapori9ation sulimation and condensation.

T,(' phases 0 phase transitions 3&!' general chemistry

:. Which of the following processes is endothermic?

A) melting of iceB) condensation of water

!) deposition of caron dio7ide


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") free9ing of water

%) condensation of ammonia

A#&' A (T&' 1 "*' moderate +%*' 11.4

,B-' "efine melting free9ing vapori9ation sulimation and condensation.T,(' phases 0 phase transitions

;. The process represented y the equation !18s) !18g) is

A) melting.B) liquefaction.

!) sulimation.

") condensation.%) fusion.

A#&' ! (T&' 1 "*' easy +%*' 11.4,B-' "efine melting free9ing vapori9ation sulimation and condensation.


. When a solid undergoes a phase change to a gas the process is called

A) fusion.

B) condensation.!) melting.") vapori9ation.

%) sulimation.

A#&' % (T&' 1 "*' easy +%*' 11.4

,B-' "efine melting free9ing vapori9ation sulimation and condensation.


@. A ottle is filled with a small amount of a volatile liquid and sealed. &ometime later it is

oserved that no liquid is evident in the sealed ottle. Which of the following statements

would e7plain this oservation?A) 3ore time is needed to estalish equilirium.

B) Liquid and vapor are at equilirium in the ottle.

!) Too little liquid was added to achieve a liquid vapor equilirium in the closedsystem.

") The vapor state is favored when equilirium is estalished.

%) The liquid has undergone sulimation.

A#&' ! (T&' 1 "*' moderate +%*' 11.4

,B-' "efine vapor pressure. T,(' phases 0 phase transitions%2' vapor pressure 3&!' general chemistry

>. %nough of a volatile liquid is placed in a closed container to achieve a liquid$vapor

equilirium at a fi7ed temperature. Which of the following statements regarding this systemis5are correctonce equilibrium is established?

1. Liquid molecules are no longer evaporating.4. The numer of vapor molecules remains essentially constant.

6. The partial pressure e7erted y the vapor molecules is called the vapor pressure

of the liquid.


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A) 1 onlyB) 4 only

!) 6 only

") 1 and 4%) 4 and 6

A#&' % (T&' 1 "*' moderate +%*' 11.4

,B-' "efine vapor pressure. T,(' phases 0 phase transitions

. %nough of a volatile liquid is placed in a closed container to achieve a liquid$vaporequilirium. Which of the following statements regarding this system is5are correctonce

equilibrium is established?

1. The rate of condensation is equal to the rate of evaporation.4. The fraction of molecules with enough energy to escape the liquid surface

depends on the liquid surface area.

6. The vapor pressure is independent of the temperature.

A) 1 only

B) 4 only

!) 6 only") 1 and 4

%) 1 4 and 6

A#&' A (T&' 1 "*' moderate +%*' 11.4

,B-' "efine vapor pressure. T,(' phases 0 phase transitions

1


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T,(' phases 0 phase transitions

14. The oiling point of a liquid is

A) always the temperature at which the vapor pressure equals @< mm=g 81 atm).

B) always the temperature at which the liquid phase of a sustance is in equiliriumwith the vapor phase.

!) always the temperature at which the vapor pressure equals the pressure e7erted on

the liquid.

") always equal to the vapor pressure of the liquid at a given temperature.%) independent of the pressure e7erted on the liquid.

A#&' ! (T&' 1 "*' easy +%*' 11.4,B-' "efine oiling point. T,(' phases 0 phase transitions

16. Which one of the following liquids would you e7pect to have the highest vapor pressure atroom temperature? 8all oiling points are normal oiling points)

A) n$pentane .p. 6.1C!

B) methanol .p. ;.1.@ /- of energy to the metal at its melting point?


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A) @.44 1.; /-

") 66: /-

%)


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8%7ample 11.1) T,(' phases 0 phase transitions

%2' phase transition enthalpy change 3&!' general chemistry

461 it has a

vapor pressure of 1.> mm=g

B) 146 mm=g

!) :;.4 mm=g") 44 mm=g

%) 1


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A#&' B (T&' 1 "*' moderate +%*' 11.4

,B-' !alculate the vapor pressure at a given temperature. 8%7ample 11.4)T,(' phases 0 phase transitions %2' !lausius$!lapeyron equation

3&!' general chemistry

4:. n a certain mountain range water oils at :C!. What is the atmospheric pressure under

these conditions? The enthalpy of vapori9ation of water at 1.61 -58 G mol))

A) 6:.: /-5molB) 64< /-5mol

!) 4..61 -58G mol))

A) /-5mol

B) 1.1; /-5mol!) 6.61 /-5mol

") [email protected] /-5mol


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%) 6> /-5mol

A#&' " (T&' 1 "*' moderate +%*' 11.4

,B-' !alculate the heat of vapori9ation from vapor pressure. 8%7ample 11.6)

T,(' phases 0 phase transitions %2' !lausius$!lapeyron equation3&!' general chemistry

4>. n the accompanying phase diagram a liquid can e present at cominations of temperature

and pressure corresponding to points

A) A ! H and ".

B) A ! " and *.!) A B ! and H.

") A and ! only.

%) H ! " and %.

A#&' B (T&' 1 "*' moderate +%*' 11.6

,B-' "efine phase diagram. T,(' phases 0 phase transitions

%2' phase diagram 3&!' general chemistry

4. Which of the following statements concerning the accompanying phase diagram is false?

A) The solid is more dense than the liquid.

B) (oint ! is the critical point of the sustance.

!) (oint A is the triple point of the sustance.") The normal oiling point is aove the triple point.

%) The curve A" divides the solid region from the gas region.


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A#&' A (T&' 1 "*' moderate +%*' 11.6,B-' "efine phase diagram. T,(' phases 0 phase transitions

6


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A) sulimation.B) liquefaction.

!) evaporation.

") condensation.%) free9ing.

A#&' % (T&' 1 "*' easy +%*' 11.6

,B-' "efine phase diagram. T,(' phases 0 phase transitions


66. The triple point of iodine is at < torr and 11;C!. This means that liquid 4A) cannot have a vapor pressure less than < torr.

B) is more dense than 48s).

!) cannot e7ist at 1 atmosphere pressure.") cannot e7ist aove 11;C!.

%) can e7ist at pressure of 1< torr.

A#&' A (T&' 1 "*' easy +%*' 11.6

,B-' "efine triple point. T,(' phases 0 phase transitions


6:. The critical point of !!l:is 4>6C! and :; atm pressure. Liquid !!l:has a vapor pressure of

1C!. Which of the following statements must e true?

A) Iapor and liquid can only e in equilirium at one temperatureJthe normal oilingpoint.

B) Liquid !!l:can e7ist at temperatures greater than 4>6C! if the pressure is greater

than :; atm.!) Liquid and solid can only e in equilirium at one temperatureJthe free9ing point.

") The triple point of !!l:must e less than 1@>C!.

%) The normal oiling point of !!l:must e greater than 1@>C!.

A#&' " (T&' 1 "*' moderate +%*' 11.6,B-' "efine triple point. T,(' phases 0 phase transitions

%2' phase diagram 0 triple point 3&!' general chemistry

6;. Below is a phase diagram for a sustance.


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What is the name for point K on the diagram?

A) oiling pointB) normal oiling point

!) triple point

") melting point%) critical point

A#&' ! (T&' 1 "*' easy +%*' 11.6,B-' "efine triple point. T,(' phases 0 phase transitions

%2' phase diagram 0 triple point 3&!' general chemistry

6. Below is a phase diagram for a sustance.

Which line represents the melting$point curve of the sustance?

A) +$K

B) &$K!) K$

") &$

%) 3$#

A#&' A (T&' 1 "*' easy +%*' 11.6

,B-' "escrie the melting$point curve and the vapor$pressure curves 8for the liquid and

the solid) in a phase diagram. T,(' phases 0 phase transitions%2' phase diagram 0 melting$point curve 3&!' general chemistry

6@. Below is a phase diagram for a sustance.


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What is the name for point on the diagram?

A) normal oiling point.B) critical point.

!) melting point.

") oiling point.%) triple point.

A#&' B (T&' 1 "*' easy +%*' 11.6

,B-' "efine critical temperature and critical pressure.T,(' phases 0 phase transitions %2' phase diagram


:


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:6. Which of the following forces is5are responsile for capillary action a property of liquids?

1. attractive forces etween the liquid and the capillary material

4. surface tension of the liquid6. viscosity of the liquid

A) 1

B) 4!) 6

") 1 and 4%) 1 4 and 6

A#&' " (T&' 1 "*' easy +%*' 11.:

,B-' "escrie the phenomenon of capillary rise. T,(' phases 0 liquid%2' properties of liquids 3&!' general chemistry

::. Which of the following concerning surface tension and viscosity is5are correct?

1. A molecule at the surface of a liquid e7periences a net attractive force toward

the interior of the liquid.4. The surface tension of a liquid is unaffected y sustances dissolved in the

liquid.

6. The viscosity of a liquid is determined in part y the strength of intermolecular

forces.

A) 1 only

B) 4 only!) 6 only

") 1 and 4

%) 1 and 6

A#&' % (T&' 1 "*' easy +%*' 11.:

,B-' "escrie the phenomenon of capillary rise. T,(' phases 0 liquid

:;. The measure of the resistance to flow of a liquid is

A) London forces.

B) van der Waals forces.!) viscosity.

") vapor pressure.

%) surface tension.

A#&' ! (T&' 1 "*' easy +%*' 11.:

,B-' "efine viscosity. T,(' phases 0 liquid

%2' properties of liquids 0 viscosity 3&!' general chemistry

:. n which of the following sustances are intermolecular forces of attraction asent?

A) =*8l)B) !!l:8l)

!) #a!l8l)


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") =4,8l)

%) #48l)

A#&' ! (T&' 1 "*' easy +%*' 11.;

,B-' "efine London 8dispersion) forces. T,(' phases 0 liquid

:@. Which one of the following decreases as the strength of the attractive intermolecular forces

increases?

A) The normal oiling temperature.B) The vapor pressure of a liquid.

!) The e7tent of deviations from the ideal gas law.

") The heat of vapori9ation.%) The sulimation temperature of a solid.

A#&' B (T&' 1 "*' moderate +%*' 11.;,B-' +elate the properties of liquids to the intermolecular forces involved.

T,(' phases 0 liquid %2' intermolecular forces


:>. Which of the following compounds has the highest normal oiling point?

A) !=6!=4!=4!=6B) !=6!l!) !=6!=4,=

") !=6,!=6%) !=6!=4!=6

A#&' ! (T&' 1 "*' easy +%*' 11.;

,B-' +elate the properties of liquids to the intermolecular forces involved.T,(' phases 0 liquid

%2' intermolecular forces 0 hydrogen onding 3&!' general chemistry

:. Which of the following compounds has the highest vapor pressure at 4;C!?A) !=6!=4,=

B) !=6!=4!=4!=6!) !=6,!=6") !=6!=4!=6%) !=6!=4!=4!l

A#&' " (T&' 1 "*' easy +%*' 11.;

,B-' +elate the properties of liquids to the intermolecular forces involved.

T,(' phases 0 liquid %2' intermolecular forces3&!' general chemistry

;


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T,(' phases 0 liquid%2' intermolecular forces 0 hydrogen onding 3&!' general chemistry

;1. 3ethane 8!=:) is ale to e liquefied at low temperatures due to which intermolecularforce?

A) ionic onding

B) covalent onding

!) hydrogen onding") dipoleEdipole

%) London dispersion

A#&' % (T&' 1 "*' easy +%*' 11.;


T,(' phases 0 liquid

;4. Which compound has the lowest standard enthalpy of vapori9ation at 4;C!?

A) !=1:B) !>=1

!) !;=14") !>=1>%) !@=1

A#&' ! (T&' 1 "*' easy +%*' 11.;

,B-' +elate the properties of liquids to the intermolecular forces involved.T,(' phases 0 liquid %2' intermolecular forces 0 London forces


;6. Which of the following indicates the e7istence of strong intermolecular forces of attraction

in a liquid?

A) a very low critical temperature

B) a very low oiling point!) a very low vapor pressure

") a very low viscosity

%) a very low enthalpy of vapori9ation

A#&' ! (T&' 1 "*' easy +%*' 11.;

,B-' +elate the properties of liquids to the intermolecular forces involved.T,(' phases 0 liquid %2' intermolecular forces


;:. Which of the following compounds has the lowest normal oiling point?

A) !=6!=4!=4#=4B) !=6!=4!=4*

!) !=6!=4!=4,=") !=6!=4!,,=

%) !=6!=8,=)!=6

A#&' B (T&' 1 "*' easy +%*' 11.;




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;;. Which of the following compounds is e7pected to have the lowest vapor pressure?

A) !=6,!=6B) !=6!=4*!) !=6!=4,=

") !=6!=4!=4!=6%) !=6!=4!=6

A#&' ! (T&' 1 "*' easy +%*' 11.;


T,(' phases 0 liquid %2' intermolecular forces3&!' general chemistry

;. Which of the following pure sustances has the highest normal oiling point?A) =

B) =!l

!) =*") =4&

%) =Br A#&' ! (T&' 1 "*' easy +%*' 11.;,B-' +elate the properties of liquids to the intermolecular forces involved.



;@. Why does hydrogen fluoride have an unusually high normal oiling point compared to the

other hydrogen halides?A) The =$* ond in hydrogen fluoride is very strong.

B) =ydrogen fluoride has very strong London dispersion forces.

!) =ydrogen fluoride is capale of forming hydrogen onds.

") =ydrogen fluoride is ionic.%) =ydrogen fluoride is covalent.

A#&' ! (T&' 1 "*' easy +%*' 11.;,B-' +elate the properties of liquids to the intermolecular forces involved.



;>. Which of the following pure sustances has the lowest vapor pressure at 4;C!?

A) &=6B) #=6

!) (=6") As=6%) =4,

A#&' % (T&' 1 "*' easy +%*' 11.;

,B-' +elate the properties of liquids to the intermolecular forces involved.T,(' phases 0 liquid



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;. Which of the following pure sustances has the highest vapor pressure at room temperature?

A) &i6=>B) &i4=!) &i4!l") &i:=1. What is the ma7imum numer of hydrogen onds in which a water molecule couldparticipate?

A) 4B) :

!) 6")

%) ;

A#&' B (T&' 1 "*' moderate +%*' 11.;

,B-' "efine hydrogen onding. T,(' phases 0 liquid


. Which pure sustance e7hiits hydrogen onding?

A) =#*4

B) B4=!) =Br

") =4&

%) !a=4

A#&' A (T&' 1 "*' easy +%*' 11.;

,B-' "efine hydrogen onding. T,(' phases 0 liquid%2' intermolecular forces 0 hydrogen onding 3&!' general chemistry

@=1>!) &i=:") !=6!=4!=4!=4,=%) &!l6

A#&' ! (T&' 1 "*' easy +%*' 11.;,B-' dentify the intermolecular forces in a sustance. 8%7ample 11.;)




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@1. Which of the following est descries caron dio7ide 8!,4) at room temperature andpressure?

A) ionic solid

B) nonpolar molecular gas!) metallic solid

") polar molecular gas

%) covalent networ/ solid

A#&' B (T&' 1 "*' easy +%*' 11.;

,B-' dentify the intermolecular forces in a sustance. 8%7ample 11.;)

T,(' phases 0 gas 3&!' general chemistry

@4. Which of the following pure sustances may e7hiit hydrogen onding?

A) !=6!lB) !=6,!=6!) =4!,

") #8!=6)6%) =4##=4

A#&' % (T&' 1 "*' easy +%*' 11.;,B-' dentify the intermolecular forces in a sustance. 8%7ample 11.;)T,(' phases 0 liquid


@6. The strongest intermolecular forces present in a sample of pure 4are

A) London forces.

B) dipoleEdipole forces.!) metallic onds.

") covalent networ/ onds.

%) covalent onds.

A#&' A (T&' 1 "*' easy +%*' 11.;


T,(' phases 0 liquid %2' intermolecular forces 0 London forces3&!' general chemistry

@:. The strongest intermolecular forces etween molecules of (=6areA) hydrogen onds.

B) covalent onds.

!) ionic onds.") London forces.

%) dipoleEdipole attractions.A#&' % (T&' 1 "*' easy +%*' 11.;,B-' dentify the intermolecular forces in a sustance. 8%7ample 11.;)



@;. The molecules in a sample of solid &,4are attracted to each other y a comination of

A) =$onding and ionic onding.


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B) covalent onding and dipole$dipole interactions.

!) London forces and =$onding.") London forces and dipole$dipole interactions.

%) none of these

A#&' " (T&' 1 "*' moderate +%*' 11.;




@. Which of the following est descries silane 8&i=:) at room temperature and pressure?

A) ionic solidB) covalent networ/ solid

!) nonpolar molecular gas

") polar molecular gas%) metallic solid

A#&' ! (T&' 1 "*' moderate +%*' 11.;,B-' dentify the intermolecular forces in a sustance. 8%7ample 11.;)

T,(' phases 0 gas 3&!' general chemistry

@@. Which of the following is the strongest intermolecular force present in dry ice !,48s)?A) covalent onding

B) hydrogen onding

!) ionic onding") London forces

%) metallic onding

A#&' " (T&' 1 "*' easy +%*' 11.;




@>. A solid has a very high melting point is hard and in the molten state is a non$conductor.

The solid is most li/elyA) a covalent networ/ solid.

B) a metallic solid.

!) an amorphous solid.") a molecular solid.

%) an ionic solid.

A#&' A (T&' 1 "*' easy +%*' 11.

,B-' "efine molecular solid metallic solid ionic solid and covalent networ/ solid.

T,(' phases 0 solid

@. Ian der Waals forces must e ro/en to melt this type of solid.

A) A covalent networ/ solid.

B) A metallic solid.!) A molecular solid.

") An ionic solid.

%) none of the aove


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A#&' ! (T&' 1 "*' easy +%*' 11.,B-' "efine molecular solid metallic solid ionic solid and covalent networ/ solid.

T,(' phases 0 solid

>8s)

B) Ag8s)

!) =!l8l)") !l8s)

%) r8l)

A#&' B (T&' 1 "*' easy +%*' 11.

,B-' "efine molecular solid metallic solid ionic solid and covalent networ/ solid.

T,(' phases 0 solid %2' classification of solids3&!' general chemistry

>1. Which of the following est descries calcium hydride 8!a=4) at room temperature andpressure?

A) nonpolar molecular gas

B) metallic solid!) ionic solid

") polar molecular gas

%) covalent networ/ solid

A#&' ! (T&' 1 "*' moderate +%*' 11.

,B-' dentify types of solids. 8%7ample 11.@) T,(' phases 0 solid

%2' classification of solids 3&!' general chemistry

>4. Which of the following is not a covalent networ/ solid?

A) diamond

B) silicon caride!) quart9

") iron%) graphite

A#&' " (T&' 1 "*' easy +%*' 11.

,B-' dentify types of solids. 8%7ample 11.@) T,(' phases 0 solid%2' classification of solids 3&!' general chemistry

>6. Which of the following is a molecular solid?A) #a!l

B) !=:

!) &i,4") !8graphite)

%) !8diamond)

A#&' B (T&' 1 "*' easy +%*' 11.,B-' dentify types of solids. 8%7ample 11.@) T,(' phases 0 solid



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>:. Which of the following is an ionic solid?

A) &i,48s)B) #e8s)

!) #a8s)

") !s*8s)%) !,48s)

A#&' " (T&' 1 "*' easy +%*' 11.

,B-' dentify types of solids. 8%7ample 11.@) T,(' phases 0 solid%2' classification of solids 3&!' general chemistry

>;. Which onding interaction est descries the strongest intermolecular forces in Al=6?A) dipoleEdipole forces

B) metallic onding

!) ionic onding") London dispersion forces

%) primarily hydrogen onding

A#&' ! (T&' 1 "*' moderate +%*' 11.



>. Which of the following is a molecular solid?

A) carorundum &i!

B) quart9!) glass

") hydrogen chloride

%) potassium

A#&' " (T&' 1 "*' easy +%*' 11.



>@. Which of the following pure sustances has the highest normal melting point?

A) *B)

!) #a*

") #a!l%) #a

A#&' ! (T&' 1 "*' easy +%*' 11.,B-' +elate the melting point of a solid to its structure. T,(' phases 0 solid

%2' properties of solids 0 melting point 3&!' general chemistry

>>. Which of the following pure sustances has the lowest melting point?A) Li*

B) +*

!) !s*") *

%) #a*


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A#&' ! (T&' 1 "*' easy +%*' 11.

,B-' +elate the melting point of a solid to its structure. T,(' phases 0 solid%2' properties of solids 0 melting point 3&!' general chemistry

>. Which of the following pure sustances has the lowest melting point?A) !s4,

B) !s!l

!) !sBr

") !s%) !s*

A#&' " (T&' 1 "*' easy +%*' 11.,B-' +elate the melting point of a solid to its structure. T,(' phases 0 solid

%2' properties of solids 0 melting point 3&!' general chemistry


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!) &i=:") !=:%) Al=6

A#&' % (T&' 1 "*' easy +%*' 11.,B-' "etermine relative melting points ased on types of solids. 8%7ample 11.>)

T,(' phases 0 solid %2' properties of solids 0 melting point


:. Which of the following pure sustances has the highest normal melting point?

A) #,4B) &i,4!) !,4") (:,1)T,(' phases 0 solid %2' properties of solids 0 melting point


;. Which of the following pure sustances has the highest normal melting point?A) (:,1)

T,(' phases 0 solid %2' properties of solids


@. A certain solid sustance that is very hard has a high melting point and is nonconducting

unless melted is most li/ely to e'

A) !,4B) 4!) =4,

") #a!l


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%) !u

A#&' " (T&' 1 "*' easy +%*' 11.

,B-' +elate the hardness and electrical conductivity of a solid to its structure.

T,(' phases 0 solid %2' properties of solids3&!' general chemistry

>. A solid crystal of #a!l is

A) soft low melting a poor electrical conductor.B) soft low melting a good electrical conductor.

!) hard high melting a good electrical conductor.

") hard high melting a poor electrical conductor.%) soft high melting a poor electrical conductor.

A#&' " (T&' 1 "*' easy +%*' 11.,B-' +elate the hardness and electrical conductivity of a solid to its structure.

T,(' phases 0 solid %2' properties of solids


. Which of the following concerning the 4$" lattice provided elow is5are correct?

1. ,ne possile unit cell contains a single and a single .

4. 3ore than one unit cell which reproduces this lattice is possile.

6. ,ne possile unit cell contains four Ps and four Ps.

A) 1 onlyB) 4 only

!) 6 only

") 1 and 4

%) 1 4 and 6

A#&' " (T&' 1 "*' moderate +%*' 11.@

,B-' "efine crystal lattice and unit cell of a crystal lattice. T,(' phases 0 solid

1


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,B-' "efine simple cuic unit cell ody$centered cuic unit cell and face$centered cuic

unit cell. T,(' phases 0 solid%2' crystalline solids 0 cuic unit cell 3&!' general chemistry

1


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1. Lithium chloride crystalli9es in a face$centered cuic structure. The unit cell length is

;.1: 1cm. The chloride ions are touching each other along the face diagonal of the unit

cell. The lithium ions fit into the holes etween the chloride ions. =ow many chloride ions

are there in this unit cell?A) :

B) 6

!) 1

") >%) 4

A#&' A (T&' 1 "*' moderate +%*' 11.>,B-' "escrie the three types of cuic structures of ionic solids.

T,(' phases 0 solid

%2' structures of crystalline solids 0 ionic solid 3&!' general chemistry

1


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,B-' !alculate atomic mass from unit$cell dimension and density. 8%7ample 11.1


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%) 4.>4 1 g5cm6

A#&' ! (T&' 1 "*' difficult +%*' 11.

,B-' !alculate atomic mass from unit$cell dimension and density. 8%7ample 11.1


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B) 4.6; 1 pm

B) ;14 pm

!) 1


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A#&' A (T&' 1 "*' difficult +%*' 11.

,B-' "etermine the numer of atoms in a unit cell. 8%7ample 11.)T,(' phases 0 solid

146. A metal crystalli9es in a face$centered cuic lattice. The radius of the atom is 14; pm andthe density of the element is >.1 g5cm6. What is the volume of the unit cell?

A) >.1> 1. cm65molB) 4:.@ cm65mol

!) >. cm65mol

") 66.: cm65mol%) < cm65mol

A#&' " (T&' 1 "*' difficult +%*' 11.

,B-' !alculate unit$cell dimension from unit$cell type and density. 8%7ample 11.11)T,(' phases 0 solid %2' calculations with unit cell dimensions


14;. The metal cesium crystalli9es in a ody$centered cuic lattice. f the density of cesium is1.>> g5cm6 what is the atomic volume of cesium?

A) 1.< 1


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%) 41 pm

A#&' % (T&' 1 "*' difficult +%*' 11.

,B-' !alculate unit$cell dimension from unit$cell type and density. 8%7ample 11.11)

T,(' phases 0 solid %2' calculations with unit cell dimensions3&!' general chemistry

14@. Lithium chloride crystalli9es in a face$centered cuic structure. The unit cell length is

;.1: 1

cm. The chloride ions are touching each other along the face diagonal of the unitcell. The lithium ions fit into the holes etween the chloride ions. What is the radius of the

chloride ion?

A) 4.;4 1cm

B) 1.>4 1cm

!) 4.; 1cm

") 1.:; 1cm

%) 4.>4 1cm

A#&' B (T&' 1 "*' difficult +%*' 11.,B-' !alculate unit$cell dimension from unit$cell type and density. 8%7ample 11.11)

T,(' phases 0 solid %2' calculations with unit cell dimensions3&!' general chemistry

14>. Which of the following statements concerning the determination of crystal structure y 7$

ray diffraction is incorrect?A) K$rays are reflected from the repeating planes of an ordered crystal lattice.

B) A diffraction pattern reveals the locations of the electrons in a crystal.

!) Analysis of a diffraction pattern reveals the structure of a crystal.

") K$rays undergo constructive and destructive interference upon reflection in acrystal lattice.

%) A diffraction pattern from a crystal depends on the incident angle of the 7$rays.

A#&' B (T&' 1 "*' easy +%*' 11.1

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General Chemistry Ch. 11 TB

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